Definition: In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.
Input: ['4779', '5253', 'h', '43', '4069', '2071', '8079']

4779, 5253, 8, 43, 4069, 2071, 8079